Research shows that improvement in U.S.air quality over the last several decades has resulted in
A)no change in the amount of acid rain.
B)adding about half a year to the typical lifespan.
C)more and more children exercising outdoors.
D)no change in patterns of human health.

Question

Quizplus · Accepted Answer

Research has shown that the improved air quality in the US over several decades has added about half a year to the typical lifespan of Americans. This is attributed to a reduction in air pollution-related illnesses such as asthma, heart disease, and lung cancer.

Research Shows That Improvement in U